Read formats correctly in read_mulrk Reported by Ivan Samsonov Fixes that
part of rubyforge.org/forum/message.php?msg_id=62821
which is a bug. Does nothing for the disappearance of Rich-Text formatting,
which will not be addressed until 0.7.0

Fixes a (benign?) bug, where adding text to a template-file resulted in a
duplicate extsst-record.

0.6.1.9 / 2008-11-07

1 Bugfix

Fixes a precision-issue in Excel::Row#datetime: Excel records Time-Values
with more significant bits (but not necessarily more precise) than DateTime
can handle. (Thanks to Bjørn Hjelle for the Bugreport)

1 minor enhancement

Added support for appending Worksheets to a Workbook (Thanks to Mohammed
Rabbani for the report)

0.6.1.8 / 2008-10-31

1 Bugfix

Fixes a bug where out-of-sequence reading of multiple Worksheets could lead
to data from the wrong Sheet being returned. (Thanks to Bugreporter
extraordinaire Bjørn Hjelle)

0.6.1.7 / 2008-10-30

1 Bugfix

Fixes a bug where all Formulas were ignored. (Thanks to Bjørn Hjelle for
the report)

1 minor enhancement

Allow the substitution of an IO object with a StringIO. (Thanks to luxor
for the report)